我们决定不在鳄鱼滋生的沼泽里游泳。

We decided not to swim in the ___crocodile-infested swamp.

我的朋友开始走进水里，突然一条鳄鱼抓住了她的腿。

My friend started to walk into the water when suddenly a ___crocodile grabbed her leg.

鳄鱼是一种经常藏在河里的捕食者。

The ___crocodile is a predator that often hides in rivers.